diff --git a/include/llvm/CodeGen/Analysis.h b/include/llvm/CodeGen/Analysis.h
index 81e75d894d3..ce9ca0a0583 100644
--- a/include/llvm/CodeGen/Analysis.h
+++ b/include/llvm/CodeGen/Analysis.h
@@ -86,8 +86,7 @@ ISD::CondCode getICmpCondCode(ICmpInst::Predicate Pred);
 /// between it and the return.
 ///
 /// This function only tests target-independent requirements.
-bool isInTailCallPosition(ImmutableCallSite CS, Attribute CalleeRetAttr,
-                          const TargetLowering &TLI);
+bool isInTailCallPosition(ImmutableCallSite CS, const TargetLowering &TLI);
 
 } // End llvm namespace
 
diff --git a/lib/CodeGen/Analysis.cpp b/lib/CodeGen/Analysis.cpp
index aaba1449a62..c7abf7a0c4f 100644
--- a/lib/CodeGen/Analysis.cpp
+++ b/lib/CodeGen/Analysis.cpp
@@ -265,8 +265,7 @@ static const Value *getNoopInput(const Value *V, const TargetLowering &TLI) {
 /// between it and the return.
 ///
 /// This function only tests target-independent requirements.
-bool llvm::isInTailCallPosition(ImmutableCallSite CS, Attribute CalleeRetAttr,
-                                const TargetLowering &TLI) {
+bool llvm::isInTailCallPosition(ImmutableCallSite CS,const TargetLowering &TLI){
   const Instruction *I = CS.getInstruction();
   const BasicBlock *ExitBB = I->getParent();
   const TerminatorInst *Term = ExitBB->getTerminator();
@@ -312,14 +311,16 @@ bool llvm::isInTailCallPosition(ImmutableCallSite CS, Attribute CalleeRetAttr,
   // Conservatively require the attributes of the call to match those of
   // the return. Ignore noalias because it doesn't affect the call sequence.
   const Function *F = ExitBB->getParent();
-  Attribute CallerRetAttr = F->getAttributes().getRetAttributes();
-  if (AttrBuilder(CalleeRetAttr).removeAttribute(Attribute::NoAlias) !=
-      AttrBuilder(CallerRetAttr).removeAttribute(Attribute::NoAlias))
+  AttributeSet CallerAttrs = F->getAttributes();
+  if (AttrBuilder(CallerAttrs, AttributeSet::ReturnIndex).
+        removeAttribute(Attribute::NoAlias) !=
+      AttrBuilder(CallerAttrs, AttributeSet::ReturnIndex).
+        removeAttribute(Attribute::NoAlias))
     return false;
 
   // It's not safe to eliminate the sign / zero extension of the return value.
-  if (CallerRetAttr.hasAttribute(Attribute::ZExt) ||
-      CallerRetAttr.hasAttribute(Attribute::SExt))
+  if (CallerAttrs.hasAttribute(AttributeSet::ReturnIndex, Attribute::ZExt) ||
+      CallerAttrs.hasAttribute(AttributeSet::ReturnIndex, Attribute::SExt))
     return false;
 
   // Otherwise, make sure the unmodified return value of I is the return value.
diff --git a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
index 4e07fd379cb..cf748600af6 100644
--- a/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
+++ b/lib/CodeGen/SelectionDAG/SelectionDAGBuilder.cpp
@@ -5277,8 +5277,7 @@ void SelectionDAGBuilder::LowerCallTo(ImmutableCallSite CS, SDValue Callee,
 
   // Check if target-independent constraints permit a tail call here.
   // Target-dependent constraints are checked within TLI.LowerCallTo.
-  if (isTailCall &&
-      !isInTailCallPosition(CS, CS.getAttributes().getRetAttributes(), TLI))
+  if (isTailCall && !isInTailCallPosition(CS, TLI))
     isTailCall = false;
 
   TargetLowering::